In this worksheet, we will practice checking if a number, or a set of numbers, belongs to, is included in, or is not included in the set of natural numbers.

**Q2: **

Decide whether the answer to the following question belongs to : How many cities are there in your country?

- Abelongs to
- Bdoes not belong to

**Q4: **

Is a natural number?

- A no
- B yes

**Q5: **

Decide whether the answer to the following question belongs to : How many people are there in your family?

- Abelongs to
- Bdoes not belong to

**Q6: **

Decide whether the answer to the following question belongs to : What is your father’s height in metres?

- Adoes not belong to
- Bbelongs to

**Q7: **

Find the set of numbers that belong in .

- A
- B
- C
- D
- E

**Q8: **

Which of the following is true?

- A
- B

**Q9: **

Which of the following is true?

- A
- B
- C

**Q10: **

Is or ?

- A
- B

**Q11: **

Is , , or ?

- A
- B

**Q12: **

State the elements in given .

- A
- B
- C
- D
- E

**Q13: **

Is or ?

- A
- B

**Q14: **

Is or ?

- A
- B

**Q15: **

Is or ?

- A
- B

**Q16: **

Is or ?

- A
- B

**Q17: **

Find the set of natural numbers that are greater than or equal to 10.

- A
- B
- C
- D
- E

**Q18: **

Find the set of counting numbers that are between 4 and 7.

- A
- B
- C
- D
- E

**Q19: **

Which of the following completes this relation: ?

- A
- B
- C
- D

**Q20: **

Find the set of natural numbers between and .

- A
- B
- C
- D

**Q21: **

Which of the following is a natural number: 9.6, 8,870, , ?

**Q22: **

Is or ?

- A
- B

**Q23: **

Does your weight in kilograms belong to ?

- Ano
- Byes

**Q24: **

The price of one kilogram of mangoes is 34 LE. Does the price of kg belong to the set of natural numbers?

- ANo
- BYes

**Q25: **

List the set of natural numbers that are between and .

- A
- B
- C
- D